Bug 1059674 - use AsynchShutdown.blocker() for AddonManager provider shutdown; r=unfocused
Bug 1020831 - Make SessionStore.jsm and SessionFile.jsm share the same run state r=yoric
Bug 1032324 - about:newtab can't switch search engine if icon/logo/image is not available. r=adw
Bug 1073522 - Better error when front has no actor. r=dcamp
No bug, Automated HSTS preload list update from host bld-linux64-spot-046 - a=hsts-update
No bug, Automated HPKP preload list update from host bld-linux64-spot-046 - a=hpkp-update
Bug 1071164 - Display magnifying glass for search results in awesomebar (follow-up of bug 1040725). r=Unfocused
merge m-c to fx-team; a=merge

--HG--
extra : amend_source : d5fc0736172ed22bc792e03fe69d0f67531b6273
merge m-c to fx-team
Backed out changeset c9ef2c9434b5 (bug 1071164)
Bug 1073502 - Restore closed windows even when there are no open windows on startup r=yoric
Bug 1073513 - Revive windows in the correct order when closing them one after the other until quitting
Bug 1073992 - Keep track of revivable windows separately to allow reviving more windows than the max_undo_windows pref allows